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답안 #17445

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
17445 2015-12-11T16:08:27 Z atomzeno 지우개 (GA4_eraser) C++
100 / 100
 18 ms 1864 KB 
#include<cstdio>
#define MOD 1000000007
long long a[100001];
long long x,y,z,answer;
int main(){
    int i,j,n;
    scanf("%d",&n);
    for(i=0; i<n; i++){
        scanf("%d",&j);
        a[j]+=j;
        a[j]%=MOD;
    }
    for(i=1; i<=100000; i++){
        x+=a[i];
        x%=MOD;
        y+=a[i]*a[i]%MOD;
        y%=MOD;
        z+=a[i]*a[i]%MOD*a[i]%MOD;
        z%=MOD;
    }
    answer=x*x%MOD*x%MOD;
    answer-=3*x%MOD*y%MOD;
    answer+=MOD;
    answer%=MOD;
    answer+=2*z%MOD;
    answer%=MOD;
    answer*=166666668;
    answer%=MOD;
    printf("%lld",answer);
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 1864 KB Output is correct
2 Correct 0 ms 1864 KB Output is correct
3 Correct 2 ms 1864 KB Output is correct
4 Correct 0 ms 1864 KB Output is correct
5 Correct 0 ms 1864 KB Output is correct
6 Correct 2 ms 1864 KB Output is correct
7 Correct 0 ms 1864 KB Output is correct
8 Correct 0 ms 1864 KB Output is correct
9 Correct 0 ms 1864 KB Output is correct
10 Correct 2 ms 1864 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 1864 KB Output is correct
2 Correct 0 ms 1864 KB Output is correct
3 Correct 2 ms 1864 KB Output is correct
4 Correct 0 ms 1864 KB Output is correct
5 Correct 2 ms 1864 KB Output is correct
6 Correct 0 ms 1864 KB Output is correct
7 Correct 0 ms 1864 KB Output is correct
8 Correct 0 ms 1864 KB Output is correct
9 Correct 0 ms 1864 KB Output is correct
10 Correct 0 ms 1864 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 1864 KB Output is correct
2 Correct 0 ms 1864 KB Output is correct
3 Correct 0 ms 1864 KB Output is correct
4 Correct 2 ms 1864 KB Output is correct
5 Correct 0 ms 1864 KB Output is correct
6 Correct 2 ms 1864 KB Output is correct
7 Correct 0 ms 1864 KB Output is correct
8 Correct 0 ms 1864 KB Output is correct
9 Correct 0 ms 1864 KB Output is correct
10 Correct 0 ms 1864 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1864 KB Output is correct
2 Correct 2 ms 1864 KB Output is correct
3 Correct 2 ms 1864 KB Output is correct
4 Correct 0 ms 1864 KB Output is correct
5 Correct 0 ms 1864 KB Output is correct
6 Correct 0 ms 1864 KB Output is correct
7 Correct 0 ms 1864 KB Output is correct
8 Correct 0 ms 1864 KB Output is correct
9 Correct 0 ms 1864 KB Output is correct
10 Correct 2 ms 1864 KB Output is correct

Subtask #5
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 1864 KB Output is correct
2 Correct 3 ms 1864 KB Output is correct
3 Correct 3 ms 1864 KB Output is correct
4 Correct 13 ms 1864 KB Output is correct
5 Correct 3 ms 1864 KB Output is correct
6 Correct 11 ms 1864 KB Output is correct
7 Correct 3 ms 1864 KB Output is correct
8 Correct 12 ms 1864 KB Output is correct
9 Correct 11 ms 1864 KB Output is correct
10 Correct 14 ms 1864 KB Output is correct

Subtask #6
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 1864 KB Output is correct
2 Correct 0 ms 1864 KB Output is correct
3 Correct 18 ms 1864 KB Output is correct
4 Correct 6 ms 1864 KB Output is correct
5 Correct 0 ms 1864 KB Output is correct
6 Correct 5 ms 1864 KB Output is correct
7 Correct 15 ms 1864 KB Output is correct
8 Correct 0 ms 1864 KB Output is correct
9 Correct 13 ms 1864 KB Output is correct
10 Correct 14 ms 1864 KB Output is correct